Stationary exercise device



FIG. 1 is a rear perspective view of the subject design;

FIG. 2 is a front perspective view of the subject design;

FIG. 3 is a side elevational view of the subject design, with the opposite side elevational view being a mirror image thereof;

FIG. 4 is a rear view of the subject design;

FIG. 5 is a front view of the subject design;

FIG. 6 is a top plan view of the subject design; and,

FIG. 7 is a bottom plan view of the subject design. 

The ornamental design for a stationary exercise device, as shown and described. 